exoplanet
An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of 888 such planets (in 693 planetary systems, including 133 multiple planetary systems) have been identified as of 16 May 2013.[5] The Kepler mission has detected over 18,000 additional transit events, including 262 that may be habitable planets.[6][7] In the Milky Way galaxy, it is expected that there are many billions of planets (at least one planet, on average, orbiting around each star, resulting in 100â400 billion exoplanets),[1][2][3][8] with many more free-floating planetary-mass bodies orbiting the galaxy directly.[9] The nearest known exoplanet is Alpha Centauri Bb. Almost all of the planets detected so far are within our home galaxy the Milky Way; however, there have been a small number of possible detections of extragalactic planets. Astronomers at the Harvard-Smithsonian Center for Astrophysics (CfA) reported in January 2013, that "at least 17 billion" Earth-sized exoplanets are estimated to reside in the Milky Way galaxy.[10]
For more information about exoplanet check the Wikipedia article here
ZME Science posts about exoplanet
Dire news came today. Astronomers, and people dreaming of life beyond our solar system alike all over the world, are morning the loss of the Kepler – the space telescope tasked with discovering exoplanets capable of supporting life. One of the telescope’s wheels failed and as such, the telescope can’t stabilize its gaze on a [...]
A new alien planet has been found by astronomers who have a novel planet hunting method which makes good use of Einstein’s special theory of relativity. The newly found exoplanet is slightly larger than Jupiter and is the first such planet found with this method. The planet orbits a star in the constellation Cygnus, about [...]
The ever resourceful Kepler mission has recently unveiled several new possible Earth-like planet candidates, two of whom are favored by scientists with the best odds yet of supporting alien life. The pair actually orbits around the same star, called Kepler 62, after NASA’s Kepler spacecraft, which is smaller and dimmer than our own star. Kepler 62 [...]
Researchers have for the first time conducted a remote reconnaissance of a distant planetary system with a new telescope imaging system. Peeking at other planets Project 1640 is a dedicated high contrast imaging program at Palomar Observatory with the goal of obtaining images and spectra of brown dwarfs and planetary mass companions to nearby stars. [...]
Though hundreds of potentially life harboring exoplanets have been discovered thus far, until the James Webb Space Telescope becomes operational, sometime around 2018, scientists today lack the resources to peer into the guts of these planet and determine a realistic chance of hosting life. Even when the JWT goes live, however, it will take hundreds [...]
After researchers surveyed data from the Kepler mission tasked with identifying possibly habitable planets outside our solar system they found that 6% of red dwarfs – the most common type of planets – are within this zone. This new adjustment would mean that the nearest Earth-like planet might lie just 13 light years away. Astronomers [...]
The Kepler mission has proven to be invaluable to science today thanks to its formidable discoveries of exoplanets in our galaxy. It’s rather remarkable how scientists can tell so much from so little, like the size, mass, orbit and sometimes even composition of a distant planet all by analyzing light. On other hand, it’s frustrating [...]
Of the hundreds of exoplanets discovered thus far, many of them are classed as super-Earths, planets with a mass up to ten times that of our planet. Due to their inherent different structure however, their cores would be far from being similar to that of the Earth, leading many scientist to claim that they might [...]
Astronomers have used a novel planet hunter instrument to detect a new possible life supporting, Earth-like exoplanet. In fact the new planet is classed as a super-Earth, since it has a minimum mass of 7.1 times that of our planet, and is properly located on its parent star’s orbit to support the presence of liquid [...]
The European Southern Observatory has captured and analyzed an image of the center of our galaxy which, if printed at normal resolution, would measure 9 x 7 meters. The enormous 9 gigapixel image features the very center of the Milky Way and was created not to be a background for huge screens, but to help [...]
The European Space Agency has officially announced that it will launch a new space telescope tasked with the primary objective of finding Earth-like planets in our neighboring cosmic backyard. Though the mission’s budget is rather small, there’s nothing modest about its goals. Dubbed CHEOPS or CHaracterising ExOPlanets Satellite, at the end of its 3.5 year-long scheduled mission the [...]
Researchers at MIT, the University of California at Santa Cruz and other institutions have come across the first exoplanetary system, whose planets exhibit a regularly aligned orbit, after analyzing data from NASA’s Kepler space telescope. So far, other discovered exoplanetary systems had planets, particularly hot-Jupiters, which presented far more eccentric orbits. Our solar system is comprised of eight [...]
Summer is set to kick-off with a series of beautiful Venus related events, from an astronomical point of view at least. This week, the planet will appear at its brightest in the night sky, as it nears almost ideal observational circumstances – close distance to Earth and sun phase. Also, at the beginning of June, [...]
Our solar system is special for two reasons: the first one, obviously – is us. Our solar system is the only one we know of so far that hosts life. The second one is the number of planets – no other solar system that we’ve seen until now had as many planets as ours, but [...]
One of the most outstanding dreams astronomers and other scientists hope to accomplish is to someday encounter proof that extraterestrial life exists. Intelligent life might be extremely far off, however microbiological life should without a doubt be present elsewhere other than our planet or solar system. For life to blossom, however, the right conditions have [...]
The hunt for the second Earth, a similar life-bearing paradise like our own, rages on, and while no candidate came any close so far, scientists have made some extraordinary discoveries in the process. The latest exciting find is a super-Earth, a planet larger than Earth, but no bigger than Neptune, that represents the first of [...]
The hunt for finding another Earth is making progress every day, as scientists are constantly adding new viable candidates to the list. It’s estimated that in our galaxy alone, the Milky Way, there are between 200 and 400 billion stars – out of all of these, from a statistical point of view, the chances of [...]
In our very own Milky Way galaxy alone, astronomers estimate there are between 200 billion and 400 billion stars. Of these, there are many that exoplanets within their solar systems. Still, what are the odds planets, more or less similar to our one, capable of supporting life, microscopic or otherwise, exist? This is the exact [...]
This news couldn’t have come any sooner. It was just last week that we reported how gamers made a monumental breakthrough by helping solve a decade old problem in less than ten days in a fantastic collective effort via an online game, leading to significant advances to AIDS treatment research. Now, NASA has confirmed two [...]
The HARPS team at the La Silla Observatory in Chile recently discovered a slew of 50 exoplanets, all in one go. Among these highly promising finds, lies a rocky planet, with a mass 3.6 times that of our Earth, which might offer conditions to support life. Dubbed HD 85512b, the super-Earth planet is located in [...]
There are few more dazzling sights in the world than that of the great Norther Lights, and in a exercise of brilliant imagination scientists have depicted how an aurorae would look like on huge hot planets. Scientists ran computer models of so-called “hot-Jupiters” placed in close proximity to a sun (a few millions miles away, [...]
After an exciting discovery of a habitable earth-like planet, skepticism settles back in as a second team of scientists casts some doubt on the claim. Nicknamed Gliese 581 g, the planet in case stirred up the scientific world, promising to be the holy graal of exoplanets after it was discovered by Steven Vogt of the [...]
Thu, May 16, 2013
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